Theory 19/Hours to Days/Sleep
Sleep Pressure Is Build Against Clearance
The claim
Sleep pressure is set by the ratio of wake duration to clearance rate rather than by wake duration alone, so individuals differ in how fast they accumulate debt.
01Mechanism
A metabolite accumulates during wake and is cleared during sleep; the ratio determines the level reached for a given day length.
02Prediction
Pressure should track the ratio at equal wake time.
03Refutation
Pressure tracking wake duration would remove clearance.